sd_bus_message_get_seqnum;
sd_bus_message_get_creds;
sd_bus_message_is_signal;
sd_bus_message_is_method_call;
sd_bus_message_is_method_error;
sd_bus_message_get_seqnum;
sd_bus_message_get_creds;
sd_bus_message_is_signal;
sd_bus_message_is_method_call;
sd_bus_message_is_method_error;